[MacPorts] #52510: mc: update to 4.8.18

[MacPorts]

#52510: mc: update to 4.8.18
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 Reporter:  sierkb@…  |      Owner:  macports-tickets@…
     Type:  update    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.3.4
 Keywords:            |       Port:  mc
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 The mc port's version is outdated, please update.

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Ticket URL: <https://trac.macports.org/ticket/52510>
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